yoster,
Traxxas has a claim of of 37.8 for the Evader ST, which is in line with all the reading I Have done , taking personal guesses with a grain of salt.
So I will still stick to the fact it will run 38 MPH stock, being traxxxas will not exaggerate a competitor truck to be faster than it really is to prove their point of the Jato being the fastest of all.
I have done exactly as you suggested with putting the bell and spur in from the buggy, but gearing is 20% different than stock, so what is the drag % increase with the extra 7 MPH? , Maybe 10%?, thus changing my original calculations from 45.6 to 44.8 MPH.
This make sense ........anyone??
Joe